11025 results about "Power module" patented technology

A handheld fan includes a housing, a fan module, a power module, and a retractable cable module. The fan module is disposed in the housing, the power module is disposed in the housing and configured to supply power to the fan module, the retractable cable module is disposed in the housing and includes a cable retractable relative to the housing to be withdrawn into the housing or extended out of the housing, and the cable is configured to connect to an external electronic device, and supply power to the external electronic device through the power module. When a user carries the handheld fan and has a charging need, the cable is capable of being pulled out of the housing of the handheld fan, and connected to the external electronic device including a mobile phone. The power module is configured to supply power to the external electronic device.

The invention provides an all-silicon carbide double-sided heat dissipation module packaging method based on gradient thermal resistance optimization, and belongs to the technical field of electronic component packaging. Establishing a thermal resistance characteristic curve, and calculating a gradient thermal resistance vector to determine a heat flow path; constructing a heat dissipation temperature distribution matrix; obtaining thermal diffusion data; heat dissipation path thermal resistance is calculated by combining the thermal diffusion matrix and the temperature distribution matrix, and a thermal resistance sparse matrix is established and is dimensionally reduced into a thermal resistance low-dimensional matrix; calculating an optimal heat dissipation path parameter set; inputting the parameter set into a thermal resistance prediction deep attention network model for verification and fine tuning, and generating a final thermal resistance distribution scheme; a module structure and a material ratio are designed according to the scheme to form a sandwich structure; a silver paste sintering process is adopted to realize low thermal resistance connection and complete packaging, and the technical problems of non-uniform thermal resistance distribution and difficulty in optimizing a heat flow path in a double-sided heat dissipation structure of a silicon carbide power module in the prior art are solved.

The invention discloses an intelligent hardware equipment monitoring method based on the Internet of Things, which comprises the following steps of: acquiring data such as sensor signals, temperature power consumption of a processor, voltage and current of a power supply module and the like in real time, processing the data by applying technologies such as a filtering algorithm, a causal inference model and time sequence analysis and judging the performance change of a component; and inputting the processed data into a pre-training regression model, predicting the residual life of each component and generating a health score, integrating the health scores of each component, introducing a dynamic correlation analysis and adaptive weight adjustment mechanism, constructing a system-level health state report, and generating a priority maintenance plan for high-risk components based on the report. Intelligent evaluation and prediction of the health state of the hardware component are realized, interruption of operation of the monitoring system due to hardware faults is effectively avoided, and the reliability and maintenance efficiency of the system are improved.

The invention discloses a photovoltaic hydrogen production power supply topological structure based on MPPT and a control method, and relates to the technical field of renewable energy electrolysis hydrogen production, and the photovoltaic hydrogen production power supply topological structure mainly comprises a photovoltaic power module, a direct current bus, a water electrolysis hydrogen production unit, an energy storage unit and a control unit. The photovoltaic power modules are connected in parallel to the direct current bus through the independent DC / DC converter, and are matched with the automatic identification and scheduling functions of the control unit, the system operation strategy is automatically adjusted when the modules are newly added or faults exit, and plug-and-play, fault isolation and power reconstruction of the photovoltaic power modules can be supported; the duty ratio change step length of the DC / DC converter is limited when the current rapidly fluctuates due to the change of the photovoltaic output power, the current change rate of the electrolytic cell stack is effectively controlled, the service life protection of the electrolytic cell can be considered, the high modular access capability is achieved, multi-source collaborative scheduling is supported, and bus voltage stabilization and system current sharing optimization can be achieved.

The invention discloses a platinum resistor high-precision temperature measuring device capable of automatically identifying a wiring mode. The platinum resistor high-precision temperature measuring device comprises a power supply module, a signal detection module, an isolation module, a signal processing module and a cold end temperature measuring module. The power supply module supplies power to the signal detection and processing module. The signal detection module comprises a sensing probe, a wiring identification circuit, a constant current source, a measuring circuit and an analog-to-digital conversion circuit. The sensing probe measures the measured temperature, the wiring identification circuit automatically judges a two-wire system, a three-wire system or a four-wire system and feeds back a result, the constant current source provides positive and negative constant current excitation, and the measuring circuit collects and processes feedback voltage and then sends the feedback voltage to the analog-to-digital conversion circuit. The analog-to-digital conversion circuit is connected with the signal processing module through the isolation module, and the signal processing module calls a corresponding algorithm according to a wiring identification result and outputs final temperature data. According to the invention, high-precision temperature measurement at the grade of + / -0.02 DEG C can be realized in the range of-200 DEG C to 850 DEG C under the three / four-wire system and low-speed sampling conditions.

The invention discloses a network construction type inverter for a photovoltaic energy storage system and a virtual synchronous machine control method. The network construction type inverter comprises an inverter power module and a central controller. The central controller is used for collecting power grid operation data in real time and generating a power grid impedance state vector through online impedance identification; and dynamically adjusting virtual inertia and damping parameters of the inverter power module according to the impedance state vector by using an adaptive mapping function so as to realize cooperative control and circulating current suppression between the modules. Performing stability boundary evaluation based on the adjusted parameters, then performing intelligent early warning of the photovoltaic energy storage system, and smoothly switching the operation mode of the inverter power module; according to the invention, through deep integration of a modular hardware architecture and intelligent adaptive control, the inverter has strong autonomous network construction capability, the problems of weak power grid adaptability and transient stability are effectively solved, and the dynamic response and reliability of a photovoltaic energy storage system are improved.

The invention discloses a power domain controller system, which relates to the technical field of vehicle design and research and development and comprises a domain control board, a power module and a high-voltage power distribution part, the domain control board comprises a vehicle control unit, a heat management controller, a battery management system, a gear shifting controller and a power distribution control unit, wherein the heat management controller, the battery management system, the gear shifting controller and the power distribution control unit are electrically connected with the vehicle control unit. The heat management controller is electrically connected with the power distribution control unit. The power module comprises a slow charging motor, a DCDC converter and a relay, the slow charging motor is electrically connected with the battery management system, and the DCDC converter is electrically connected with the gear shifting controller; and the high-voltage power distribution part comprises a copper bar, a relay and a fuse. Through multi-module integration, the number of physical controllers and wiring harness complexity are reduced, the system development and maintenance cost is remarkably reduced, and meanwhile platform expansion is facilitated.

The invention provides a power module scheduling method, apparatus and device, and a storage medium. The method comprises the steps of obtaining one or more health parameters of each power module in a plurality of power modules of a charging pile; based on the one or more health parameters of each power module, determining a total health degree corresponding to each power module; determining a scheduling sequence of the plurality of power modules based on the total health degree of each power module; and scheduling the power modules to charge the target equipment according to the scheduling sequence of the plurality of power modules. According to the scheme, the total health degree of each power module determined based on the one or more health parameters of each power module can accurately reflect the health condition of the power module, so that the power modules are scheduled according to the scheduling sequence of the plurality of power modules determined based on the total health degree to charge the target equipment; the use of each power module can be balanced, and the service life of the charging pile is prolonged.

The invention belongs to the technical field of vehicle charging, and particularly relates to a double-direct-current bus star ring matrix control system and method of a charging pile and a storage medium, and the system comprises at least one charging host, each charging host is connected with at least two charging terminals, each charging terminal comprises at least one charging gun, and each charging gun is numbered; each charging host comprises a contactor matrix, a control unit and a plurality of power module groups, and each power module group is composed of a plurality of charging modules; each charging terminal is correspondingly configured with one power module group; two direct current buses; the contactor matrix comprises a ring topology contactor, a bus contactor and a parallel operation contactor; by adopting the double-direct-current bus star ring matrix topological structure and the control method, the use number of contactors is reduced, and the charging facility has flexible expansibility. The ring topology and the double direct current buses are combined, so that the system structure is more concise, and the reliability and maintainability of the system are improved.

A variable slew rate gate drive system for powering an electric machine. The system may include a gate driver operable for controlling each of a plurality of hybrid switch power modules between opened and closed states to facilitate powering the electric machine. The gate driver may be operable for selecting slew rates and controlling ON and OFF states of first and second semiconductor switches included as part of each power module to optimize powering of the electric machine by varying the slew rates as a function of performance characteristics of the first and second semiconductor switches.

The invention provides a charging station rectifier cabinet power distribution method and system, and the method comprises the steps: building a first pre-distribution power path between each charging gun in a plurality of charging guns in charging and a direct connection power module, and obtaining a first pre-distribution power path set; determining a second pre-distribution power path set of the charging gun in each charging process to obtain a plurality of second pre-distribution power path sets; processing the first pre-allocated power path set and the plurality of second pre-allocated power path sets according to a preset power module scheduling priority ranking strategy to obtain a third pre-allocated power path set meeting a preset power sum constraint condition; and according to the third pre-distributed power path set, updating the electric connection relationship between the plurality of charging guns in charging and the plurality of power supply modules. The method can effectively solve the problem of path blockage when the multiple charging piles share the rectifier cabinet, and facilitates the improvement of the power utilization rate.

The embodiment of the invention provides a case and computing equipment, the case is applied to the computing equipment, the case comprises a shell, the computing equipment comprises a computing module, a power supply module and a pipeline group which are arranged in the shell, the computing module comprises a liquid cooling module and a computing force plate, the liquid cooling module is provided with a cooling flow channel for a cooling medium to flow, and the cooling flow channel is provided with a liquid outlet. The cooling flow channel is communicated with the pipeline group, a containing cavity and a pipeline cavity are defined in the case, the containing cavity is used for containing the calculation module and the power module, and the pipeline cavity is used for containing the pipeline group, so that the calculation module, the power module and the pipeline group are integrated, maintenance is easy, and occupied space of the case is reduced; and the appearance of the case is neater and more attractive.

The invention discloses a photovoltaic inverter service life prediction method. The method comprises the following steps: acquiring operation waveform data and device structure parameters of the photovoltaic inverter; on the basis of transient electrical events contained in the operation waveform data, physical state parameters representing internal characteristics of the power device are determined through inversion in combination with device structure parameters, and a corrected temperature history is generated; according to the corrected temperature history and the physical state parameter, updating a damage state which represents a cumulative effect and has path dependence; based on the damage state with path dependency, a critical stability margin of the power module is evaluated and a module remaining life is determined. According to the method, the millisecond transient state is associated with physical state changes such as power redistribution and thermal path degradation in a device through a physical closed-loop inverse problem, and traceable and early-warning accurate evaluation from a transient event to the service life of a module is realized by adopting an incremental damage kernel with memory and a system-level critical gain criterion.

The invention relates to the technical field of power electronic device diagnosis, and discloses a reverse conducting IGBT intelligent power module fault automatic diagnosis method and system. The method comprises the following steps: acquiring multi-source monitoring data including a grid voltage waveform, a collector current waveform and a shell temperature change curve when the power module operates; then establishing a dynamic feature extraction model, performing time domain and frequency domain conjoint analysis on the multi-source monitoring data, and generating a feature parameter set; then constructing a fault feature space, and mapping the feature parameter set to a high-dimensional space to form a feature vector distribution diagram; carrying out regional division on the feature vector distribution map by adopting a self-adaptive clustering algorithm, and identifying an abnormal feature aggregation region; and finally, comparing the abnormal feature gathering area with a preset fault feature library through a mode matching engine, and outputting a fault type identification result. According to the method, multi-source data can be integrated to realize dynamic feature extraction and adaptive fault identification, and the real-time performance and accuracy of fault diagnosis are improved.

The invention belongs to the technical field of heat-conducting materials, and provides liquid metal-based composite heat-conducting silicone grease as well as a preparation method and application thereof. The modified silicone oil, the liquid metal, the heat-conducting auxiliary filler and the hydrophobic fumed silica in a specific ratio are used as main components of the liquid metal-based composite heat-conducting silicone grease, and the liquid metal-based composite heat-conducting silicone grease prepared by the invention has high heat conductivity coefficient (up to 6.05-10.0 W / mk) and low heat resistance (as low as 0.01-0.03 DEG C * cm < 2 > / W), can maintain a good appearance in double-85, high temperature 125 DEG C and temperature cycle aging tests, and has a wide application prospect. Therefore, the structure is suitable for an assembly interface of a power module and a radiator with high-power heat dissipation requirements, and the heat dissipation efficiency is improved.

The invention discloses an orthogonally stacked double-sided cooling power module and a preparation method thereof. The orthogonally stacked double-sided cooling power module comprises a decoupling capacitor, a copper-clad ceramic substrate, a power chip and a metal cushion block, the metal cushion blocks and the power chips are stacked and connected layer by layer in a metal cushion block-power chip-metal cushion block mode to form a series chipset, and the copper-clad ceramic substrate is connected with the two sides of the metal cushion blocks in the series chipset and is perpendicular to the power chips. According to the invention, through the cooperative effect of orthogonal stacking packaging and double-face cooling of the double copper cushion blocks, the electrical and thermal performance of the cooling power module is cooperatively optimized, the parasitic inductance of the power module is significantly reduced, the transient over-current supporting capability is significantly improved, and the packaging technology has good flexibility and is suitable for large-scale production. The method is suitable for power modules of different packaging types.

The airborne photoelectric confrontation pod comprises a pod body, a U-shaped frame is fixedly arranged at the top of the pod body, side cover plates are arranged on the two sides of the U-shaped frame respectively, a servo control module and an orientation assembly which are used for controlling an image stabilization system are installed in the side cover plates, and the top of the U-shaped frame and an unmanned joint are assembled together through a damping assembly; a front cover for sealing and protecting is arranged at the front end of the cabin body; a power supply module, a power supply system connecting frame and a subsystem connecting frame are sequentially arranged in the cabin body from top to bottom, the power supply module is fixed on the power supply system connecting frame, the power supply system connecting frame is fixedly connected with the subsystem connecting frame, and the subsystem connecting frame is fixedly connected with the inner side of the cabin body. Through control of the upper computer system, stable observation, distance measurement and automatic tracking of ground and low-altitude targets can be realized, and a laser suppression system of the unmanned aerial vehicle is guided to emit strong laser to perform interference blinding and disposal on the unmanned aerial vehicle target.

The invention discloses a dual-redundancy servo controller and a main-standby autonomous switching method thereof, and belongs to the technical field of electric servo control. The controller comprises a host machine and a standby machine; each of the host and the standby machine comprises a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), a hardware ID (Identity) identification module, a motor power driving IPM (Intelligent Power Module) and a generator tripping instruction module which are in signal connection; the DSP and the FPGA are respectively connected with an LDO (Low Dropout Regulator) power module; the FPGA is in communication connection with the control system; the motor power driving IPM is connected with the execution mechanism; the DSP processors of the host and the standby machine are in signal connection; and the switching instruction modules of the host and the standby are in signal connection. The invention discloses a main / standby autonomous switching method for a dual-redundancy servo controller, which adopts a DSP and an FPGA to cooperatively detect and process faults, improves the fault detection rate by 5%, and reduces the possibility that the output of an IPM module is not turned off by 20% when a fault occurs; three heterogeneous redundant generator tripping modes of hardware generator tripping, serial port generator tripping and heartbeat generator tripping are adopted, and the reliability of main and standby independent generator tripping is improved by 20%.

The invention relates to a charging pile system, a power scheduling method and device thereof and computer equipment. The method comprises the steps that under the condition that a first charging gun is connected with a load, a switch of an access between the first charging gun and a target power module is closed, a target charging gun corresponding to the target power module is different from the first charging gun, and the target charging gun is in an idle state; and under the condition that the charging demand power of the first charging gun is greater than the output power of the first power module, controlling at least one target power module to provide charging power for the first charging gun. The target power module can be quickly used for providing power for the first charging gun, so that the response speed to the power requirement is improved, and the charging efficiency is improved.

The invention relates to the technical field of direct current charging pile liquid cooling heat dissipation control. The invention provides a cooperative control method, system and device for a direct-current liquid cooling charging pile and a storage medium. The method comprises the following steps: collecting charging current, gun line temperature, power module temperature and environment temperature; respectively constructing improved prediction function control sub-models of the gun line temperature and the power module temperature, and generating corresponding liquid cooling oil flow velocity control signals; heat dissipation control is carried out on the gun line and the power module through the liquid cooling machine execution unit; actual temperature is collected in real time and compared with predicted temperature to obtain an error, a control signal is corrected according to the error, and an optimal control mode is selected by adopting a mode switching strategy; and according to the current thermal load state, dynamically distributing the weight output by each sub-model, and adjusting the control priorities of different heat dissipation objects to realize collaborative heat dissipation. The problems of unbalanced heat dissipation, response lag and low energy efficiency caused by lack of cooperative control of a plurality of heat dissipation objects in an existing direct current charging pile liquid cooling heat dissipation technology are solved.

The invention belongs to the field of materials, and particularly relates to a composite thermal interface material and a preparation method thereof. The preparation method comprises the following steps: plating non-reactive metal, non-reactive metal carbide or non-reactive ceramic on the surface of diamond micro powder, inducing lattice defects on the surface of a plating layer and alloying a local interface by combining a mechanical force field, and defoaming to obtain the composite thermal interface material. The composite thermal interface material has high thermal conductivity and long-term stability, and the contradiction between excessive alloying of a traditional reactive coating and high interface thermal resistance of a non-reactive coating is solved. The method is particularly suitable for the field of thermal management of high-end electronic devices such as 5G chips and power modules.

The invention discloses a flexible dynamic distribution method and system for a power module based on a charging pile, and relates to the field of power distribution, and the method comprises the steps: collecting dynamic demand parameters of a charging terminal in real time, and calculating a target power demand in combination with a battery safety constraint; obtaining the total number of available power modules and rated power, and generating an effective module set; calculating the minimum module demand number according to the total demand and the module average power; if the modules are sufficient, an efficiency priority strategy is adopted, and distribution is optimized through a greedy algorithm; if not, high-power terminals are preferentially distributed, and then residual power is distributed in a balanced mode; through real-time data, distribution is dynamically adjusted when a threshold value is exceeded; starting dormancy for the module with the load rate lower than 30%, migrating the terminal to other modules, and awakening when the load rises to 40%, so as to improve the efficiency and the resource utilization rate. The method has the advantages that through real-time monitoring and dynamic distribution of the power modules, the charging efficiency and safety are optimized, and the resource utilization rate and the system reliability of the charging pile are remarkably improved.

The invention relates to the technical field of data processing, in particular to a lithium battery power module operation monitoring method and system, and the method comprises the steps: constructing a fault propagation chain of each fault type; obtaining an abnormal value sequence corresponding to the real-time data of each parameter, and monitoring the abnormal rising trend of each parameter in real time to construct a real-time propagation chain; and comparing the real-time propagation chain with the fault propagation chain of each fault type to obtain the probability of each fault type at any moment. Through the technical scheme of the invention, the successive change of each parameter before the fault occurs can be considered, and the operation condition of the lithium battery power supply module can be accurately obtained.

The invention relates to a welding gun self-adaptive swing adjusting system and method. The system comprises a detection module, a control module, an execution module, a man-machine interaction module, a power module and a storage module. The detection module detects welding seam unevenness information, and after receiving the information, the control module judges whether to drive the execution module to adjust a welding gun to swing or not according to a preset threshold value determined on the basis of the vertical distance between a replaced plate welding initial point and the detection module and the process fluctuation range; meanwhile, a welding seam is tracked through a point-by-point comparison method based on the linear interpolation principle, the moving direction is judged through a deviation function, the feeding direction is determined through a coordinate absolute value and a symbol in a full quadrant, interpolation is stopped when the total step length is gradually decreased to zero, and the method comprises the steps of module initialization, parameter setting, communication detection, judgment and adjustment and welding seam tracking. The invention aims to solve the problems of poor welding quality, low efficiency and more manual intervention caused by poor welding seam flatness, large gap and high-low misalignment in the welding process.

The embodiment of the utility model provides a control module for a computing device and the computing device, the computing device comprises a shell assembly, the control module comprises a control box, an installation cavity is defined in the control box, and the control box is detachably installed on the shell assembly; and the control circuit board is arranged in the mounting cavity, and the control circuit board is used for being electrically connected with a calculation module and a power module in the shell assembly. According to the technology of the embodiment of the invention, on one hand, the control circuit board and other modules of the computing device are decoupled, modular setting of the control module is realized, the expandability of the computing device is improved, on the other hand, the control module and other modules of the computing device are physically isolated, and the expandability of the computing device is improved. According to the invention, adverse effects on the control circuit board caused by heating of the computing module can be eliminated, stable operation of the computing device is facilitated, internal space occupation of the shell assembly is reduced, and the integration level of the computing device is improved.

The invention discloses a 3D packaged low parasitic inductance SiC power module, which comprises a substrate layer, a chip layer, a connecting layer, a middle layer and a decoupling capacitor, the chip layer is electrically connected with the substrate layer; the middle layer is located between the upper chip layer and the lower chip layer, and the upper connecting layer and the lower connecting layer are windowing type copper blocks, are externally connected with DC terminals and are used for connecting the upper substrate layer and the decoupling capacitor; and the decoupling capacitors are two groups of capacitors arranged beside the middle layer and are electrically connected with the upper connecting layer and the lower connecting layer. By adopting the copper material with high conductivity to be connected with the copper layers in the laminated layer and the substrate to form the middle layer, the inductance of the machine body is obviously reduced, the heat dissipation effect is improved, the machine body has obvious advantages in high-frequency, high-voltage and high-power applications, and the overall performance and reliability of a power electronic system can be effectively improved.

An aircraft system includes an electrified powertrain having a first power module and a second power module. The aircraft system further includes a thermal management system having a thermal fluid loop for conveying a thermal fluid. The first power module and the second power module are in thermal communication with the thermal fluid loop. The thermal management system further includes a heat exchanger in thermal communication with the thermal fluid loop upstream of the first power module and the second power module such that the thermal fluid from the heat exchanger is partitioned between the first power module and the second power module.

A quadruped robot with multimodal capabilities and embodied large-scale models for use in a 5G nuclear power plant, characterized in that it comprises: a control module, a power module, a robot arm module, a power supply module, a sensor module, a heat sink, an audio module and a housing structure, wherein the control module, the power module, the robot arm module, the power supply module, the sensor module, the heat sink and the audio module are mounted on the housing structure, wherein the control module is respectively connected to the individual modules, iethe power module, the robot arm module, the power supply module, the sensor module, the heat sink and the audio module to control and communicate with the robot, wherein the sensor module comprises a depth camera, a laser sensor, a mobile phone recognition device, an infrared sensor, an ultrasonic sensor and a radiation dose chip, wherein the power module consists of a motor and an electronic speed controller and is thus responsible for the movement of the robot, wherein the robot arm module comprises a motor and a robot arm controller as well as an integrated NFC module on the robot arm, and wherein the power supply module comprises a battery, a power supply manager and a power supply display screen, while the audio module provides remote voice interaction.

The invention is suitable for the technical field of hovercar control, and provides a thermal-vibration-weight collaborative optimization method of a high-power-density hovercar controller, and the method comprises the steps: constructing a three-dimensional housing structure based on fractal mechanics, achieving 35-45% of weight reduction through bionic design, and remarkably reducing the weight while guaranteeing the structural strength; thermal management, electromagnetic compatibility and vibration suppression collaborative optimization layout is established, a high-heating-power module is arranged near a heat dissipation air opening, and a sensitive control unit is arranged in a center damping area of a shell; a gradient material distribution scheme is adopted, a high-heat-conduction composite material is configured in a high-heat-flow area, and a high-damping material is adopted in a vibration sensitive area. Under the high-power working condition, the heat dissipation performance of the controller is improved, vibration transmission is reduced, the overall weight is reduced, and high-reliability control hardware support is provided for the hovercar.

The invention discloses a semiconductor device and a manufacturing method thereof, a power module, a power conversion circuit, and a vehicle. The semiconductor device includes: a semiconductor body; the semiconductor body comprises a well region and a first region; the first surface is provided with a gate trench; the gate trench comprises a first gate trench and a second gate trench which are communicated, and the second gate trench is located at one side, far away from the first surface, of the first gate trench; the first gate trench extends into the first region and the well region from the first surface, and the second gate trench is located at one side, far away from the first region, of the well region; the semiconductor body further comprises a first insulating layer and a second insulating layer, the first insulating layer is located on the side wall of the first gate trench, the second gate trench is filled with the second insulating layer, and the thickness of the second insulating layer is larger than or equal to that of the first insulating layer; and a trench gate located in the first gate trench. According to the technical scheme, the breakdown voltage of the semiconductor device is improved, and the device performance is improved.